Voltaic cell.



` Patented Aug. I4, |900. E. M. FISHELL.

VLTAIC CELL.

(Application led Jan. 20, 1900.)

(No Model.)

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Nrn raras ATENT FICE' EUGENE M. FISI'IELL, OF CLEVELAND, OHIO, ASSIGNOR T O THE NATIONAL CARBON COMPANY, OE SAME PLACE. f

' voLTAio CELL..

SPECXFICATION forming part of Letters Patent No. 655,968, dated August 14, 1900.

` Application filed January 20, 190i).l Serial'No. 2,092. (No model.)

T @ZZ whom it may concern: l

Be it known that I, EUGENE IWI. FIsHELL, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Voltaic Cells, of which the following is a full, clear, and eXactdescription, reference being had to the accompanying drawings.

My invention relates to the class of voltaic cells which have as one element a porous carbon-cup which is adapted to contain a depolarizing agent; and itsprimary object is to provide such a cup having a relatively-great generating area and which will be at the same time of compact and serviceable form, all of which will be more fully described hereinafter and definitely set forth in the claims.

The drawings clearly .illustrate my invention.

Figure l represents a vertical section of the cell complete, the containing-jar being shown in dotted lines. Fig. 2 is a side elevation, partly broken away, of the cup. Fig. 3 is a cross-section of the cup.

Referring to the parts by letters, A represents the carbon-cup, which has a head a and two depending walls a a2, yone within the other. In its preferred form the cup is circular in cross-section. The head at the upper end of the cup extends beyond the outer wall a in the form of a flange a3, by which it is adapted to be carriedby the containing-j ar B. The head also carries an upwardly-projecting lug a4 integral therewith, in which is mounted the binding-post E. Through the walls of the cup a Vertical opening'a3 is formed,

which connects the interior bore a9 ywith the exterior of the cup through the integral connecting-sleeve a, whereby the surrounding fluid may circulate` freely. The cavity be-y tween the outer and inner walls is filled with a depolarizing agent G, such as manganese dioxid, held in place by the plug C, which may be of cement or other material. A hole a7 is formed through the head concentric with the bore do, and preferably smaller, and through this hole passes the bar D of zinc or an equivalent voltaic element, this bar being insulated from the cup by the bushing F. The zinc D carries a collar d, which supports it within'the bushing, and a binding-screw d@ which affords means for electrical connection. In practice I may provide vents from the cavity through the cup, as shown in dotted lines at a8.

From the above it is readily seen that a cell constructed in accordance withmy invention presen ts without materially increasing the bulk of the cell at once a greatly-increased .sisting of two continuous cylindrical walls one within the other uniting at their upper end to form a head, said head having a laterallyprojecting annular ange, said walls being' pierced by a vertical opening surrounded by asleeve, said sleeve lying between and being integral with the walls of the cup, substantially'a's described.

3. In a voltaic cell, a porous carbon-cup consisting of a head having extending from it integrally two continuous walls, one within the other, there being alined vertically-elongated openings through said two walls, and

a sleeve integral with said walls and connect- Aing said openings, the wall of said sleeve at its upper side uniting with said head, substantially as' specified. l

In testimony whereof I hereunto affix my signature in the presence of two witnesses. EUGENE M. FISHELL. Witnesses:

H. J. DAvIns, H. E. FIsHELL. 

